Without delay, let's solve this. We've got 188 and we will be multiplying it by 421, that is, adding 188 to itself 421 times.
Step 1: 0 + 188 = 188
Step 2: 188 + 188 = 376
Step 3: 376 + 188 = 564
Step 4: 564 + 188 = 752
Step 5: 752 + 188 = 940
Step 6: 940 + 188 = 1128
Step 7: 1128 + 188 = 1316
Step 8: 1316 + 188 = 1504
Step 9: 1504 + 188 = 1692
Step 10: 1692 + 188 = 1880
Step 11: 1880 + 188 = 2068
Step 12: 2068 + 188 = 2256
Step 13: 2256 + 188 = 2444
Step 14: 2444 + 188 = 2632
Step 15: 2632 + 188 = 2820
Step 16: 2820 + 188 = 3008
Step 17: 3008 + 188 = 3196
Step 18: 3196 + 188 = 3384
Step 19: 3384 + 188 = 3572
Step 20: 3572 + 188 = 3760
Step 21: 3760 + 188 = 3948
Step 22: 3948 + 188 = 4136
Step 23: 4136 + 188 = 4324
Step 24: 4324 + 188 = 4512
Step 25: 4512 + 188 = 4700
Step 26: 4700 + 188 = 4888
Step 27: 4888 + 188 = 5076
Step 28: 5076 + 188 = 5264
Step 29: 5264 + 188 = 5452
Step 30: 5452 + 188 = 5640
Step 31: 5640 + 188 = 5828
Step 32: 5828 + 188 = 6016
Step 33: 6016 + 188 = 6204
Step 34: 6204 + 188 = 6392
Step 35: 6392 + 188 = 6580
Step 36: 6580 + 188 = 6768
Step 37: 6768 + 188 = 6956
Step 38: 6956 + 188 = 7144
Step 39: 7144 + 188 = 7332
Step 40: 7332 + 188 = 7520
Step 41: 7520 + 188 = 7708
Step 42: 7708 + 188 = 7896
Step 43: 7896 + 188 = 8084
Step 44: 8084 + 188 = 8272
Step 45: 8272 + 188 = 8460
Step 46: 8460 + 188 = 8648
Step 47: 8648 + 188 = 8836
Step 48: 8836 + 188 = 9024
Step 49: 9024 + 188 = 9212
Step 50: 9212 + 188 = 9400
Step 51: 9400 + 188 = 9588
Step 52: 9588 + 188 = 9776
Step 53: 9776 + 188 = 9964
Step 54: 9964 + 188 = 10152
Step 55: 10152 + 188 = 10340
Step 56: 10340 + 188 = 10528
Step 57: 10528 + 188 = 10716
Step 58: 10716 + 188 = 10904
Step 59: 10904 + 188 = 11092
Step 60: 11092 + 188 = 11280
Step 61: 11280 + 188 = 11468
Step 62: 11468 + 188 = 11656
Step 63: 11656 + 188 = 11844
Step 64: 11844 + 188 = 12032
Step 65: 12032 + 188 = 12220
Step 66: 12220 + 188 = 12408
Step 67: 12408 + 188 = 12596
Step 68: 12596 + 188 = 12784
Step 69: 12784 + 188 = 12972
Step 70: 12972 + 188 = 13160
Step 71: 13160 + 188 = 13348
Step 72: 13348 + 188 = 13536
Step 73: 13536 + 188 = 13724
Step 74: 13724 + 188 = 13912
Step 75: 13912 + 188 = 14100
Step 76: 14100 + 188 = 14288
Step 77: 14288 + 188 = 14476
Step 78: 14476 + 188 = 14664
Step 79: 14664 + 188 = 14852
Step 80: 14852 + 188 = 15040
Step 81: 15040 + 188 = 15228
Step 82: 15228 + 188 = 15416
Step 83: 15416 + 188 = 15604
Step 84: 15604 + 188 = 15792
Step 85: 15792 + 188 = 15980
Step 86: 15980 + 188 = 16168
Step 87: 16168 + 188 = 16356
Step 88: 16356 + 188 = 16544
Step 89: 16544 + 188 = 16732
Step 90: 16732 + 188 = 16920
Step 91: 16920 + 188 = 17108
Step 92: 17108 + 188 = 17296
Step 93: 17296 + 188 = 17484
Step 94: 17484 + 188 = 17672
Step 95: 17672 + 188 = 17860
Step 96: 17860 + 188 = 18048
Step 97: 18048 + 188 = 18236
Step 98: 18236 + 188 = 18424
Step 99: 18424 + 188 = 18612
Step 100: 18612 + 188 = 18800
Step 101: 18800 + 188 = 18988
Step 102: 18988 + 188 = 19176
Step 103: 19176 + 188 = 19364
Step 104: 19364 + 188 = 19552
Step 105: 19552 + 188 = 19740
Step 106: 19740 + 188 = 19928
Step 107: 19928 + 188 = 20116
Step 108: 20116 + 188 = 20304
Step 109: 20304 + 188 = 20492
Step 110: 20492 + 188 = 20680
Step 111: 20680 + 188 = 20868
Step 112: 20868 + 188 = 21056
Step 113: 21056 + 188 = 21244
Step 114: 21244 + 188 = 21432
Step 115: 21432 + 188 = 21620
Step 116: 21620 + 188 = 21808
Step 117: 21808 + 188 = 21996
Step 118: 21996 + 188 = 22184
Step 119: 22184 + 188 = 22372
Step 120: 22372 + 188 = 22560
Step 121: 22560 + 188 = 22748
Step 122: 22748 + 188 = 22936
Step 123: 22936 + 188 = 23124
Step 124: 23124 + 188 = 23312
Step 125: 23312 + 188 = 23500
Step 126: 23500 + 188 = 23688
Step 127: 23688 + 188 = 23876
Step 128: 23876 + 188 = 24064
Step 129: 24064 + 188 = 24252
Step 130: 24252 + 188 = 24440
Step 131: 24440 + 188 = 24628
Step 132: 24628 + 188 = 24816
Step 133: 24816 + 188 = 25004
Step 134: 25004 + 188 = 25192
Step 135: 25192 + 188 = 25380
Step 136: 25380 + 188 = 25568
Step 137: 25568 + 188 = 25756
Step 138: 25756 + 188 = 25944
Step 139: 25944 + 188 = 26132
Step 140: 26132 + 188 = 26320
Step 141: 26320 + 188 = 26508
Step 142: 26508 + 188 = 26696
Step 143: 26696 + 188 = 26884
Step 144: 26884 + 188 = 27072
Step 145: 27072 + 188 = 27260
Step 146: 27260 + 188 = 27448
Step 147: 27448 + 188 = 27636
Step 148: 27636 + 188 = 27824
Step 149: 27824 + 188 = 28012
Step 150: 28012 + 188 = 28200
Step 151: 28200 + 188 = 28388
Step 152: 28388 + 188 = 28576
Step 153: 28576 + 188 = 28764
Step 154: 28764 + 188 = 28952
Step 155: 28952 + 188 = 29140
Step 156: 29140 + 188 = 29328
Step 157: 29328 + 188 = 29516
Step 158: 29516 + 188 = 29704
Step 159: 29704 + 188 = 29892
Step 160: 29892 + 188 = 30080
Step 161: 30080 + 188 = 30268
Step 162: 30268 + 188 = 30456
Step 163: 30456 + 188 = 30644
Step 164: 30644 + 188 = 30832
Step 165: 30832 + 188 = 31020
Step 166: 31020 + 188 = 31208
Step 167: 31208 + 188 = 31396
Step 168: 31396 + 188 = 31584
Step 169: 31584 + 188 = 31772
Step 170: 31772 + 188 = 31960
Step 171: 31960 + 188 = 32148
Step 172: 32148 + 188 = 32336
Step 173: 32336 + 188 = 32524
Step 174: 32524 + 188 = 32712
Step 175: 32712 + 188 = 32900
Step 176: 32900 + 188 = 33088
Step 177: 33088 + 188 = 33276
Step 178: 33276 + 188 = 33464
Step 179: 33464 + 188 = 33652
Step 180: 33652 + 188 = 33840
Step 181: 33840 + 188 = 34028
Step 182: 34028 + 188 = 34216
Step 183: 34216 + 188 = 34404
Step 184: 34404 + 188 = 34592
Step 185: 34592 + 188 = 34780
Step 186: 34780 + 188 = 34968
Step 187: 34968 + 188 = 35156
Step 188: 35156 + 188 = 35344
Step 189: 35344 + 188 = 35532
Step 190: 35532 + 188 = 35720
Step 191: 35720 + 188 = 35908
Step 192: 35908 + 188 = 36096
Step 193: 36096 + 188 = 36284
Step 194: 36284 + 188 = 36472
Step 195: 36472 + 188 = 36660
Step 196: 36660 + 188 = 36848
Step 197: 36848 + 188 = 37036
Step 198: 37036 + 188 = 37224
Step 199: 37224 + 188 = 37412
Step 200: 37412 + 188 = 37600
Step 201: 37600 + 188 = 37788
Step 202: 37788 + 188 = 37976
Step 203: 37976 + 188 = 38164
Step 204: 38164 + 188 = 38352
Step 205: 38352 + 188 = 38540
Step 206: 38540 + 188 = 38728
Step 207: 38728 + 188 = 38916
Step 208: 38916 + 188 = 39104
Step 209: 39104 + 188 = 39292
Step 210: 39292 + 188 = 39480
Step 211: 39480 + 188 = 39668
Step 212: 39668 + 188 = 39856
Step 213: 39856 + 188 = 40044
Step 214: 40044 + 188 = 40232
Step 215: 40232 + 188 = 40420
Step 216: 40420 + 188 = 40608
Step 217: 40608 + 188 = 40796
Step 218: 40796 + 188 = 40984
Step 219: 40984 + 188 = 41172
Step 220: 41172 + 188 = 41360
Step 221: 41360 + 188 = 41548
Step 222: 41548 + 188 = 41736
Step 223: 41736 + 188 = 41924
Step 224: 41924 + 188 = 42112
Step 225: 42112 + 188 = 42300
Step 226: 42300 + 188 = 42488
Step 227: 42488 + 188 = 42676
Step 228: 42676 + 188 = 42864
Step 229: 42864 + 188 = 43052
Step 230: 43052 + 188 = 43240
Step 231: 43240 + 188 = 43428
Step 232: 43428 + 188 = 43616
Step 233: 43616 + 188 = 43804
Step 234: 43804 + 188 = 43992
Step 235: 43992 + 188 = 44180
Step 236: 44180 + 188 = 44368
Step 237: 44368 + 188 = 44556
Step 238: 44556 + 188 = 44744
Step 239: 44744 + 188 = 44932
Step 240: 44932 + 188 = 45120
Step 241: 45120 + 188 = 45308
Step 242: 45308 + 188 = 45496
Step 243: 45496 + 188 = 45684
Step 244: 45684 + 188 = 45872
Step 245: 45872 + 188 = 46060
Step 246: 46060 + 188 = 46248
Step 247: 46248 + 188 = 46436
Step 248: 46436 + 188 = 46624
Step 249: 46624 + 188 = 46812
Step 250: 46812 + 188 = 47000
Step 251: 47000 + 188 = 47188
Step 252: 47188 + 188 = 47376
Step 253: 47376 + 188 = 47564
Step 254: 47564 + 188 = 47752
Step 255: 47752 + 188 = 47940
Step 256: 47940 + 188 = 48128
Step 257: 48128 + 188 = 48316
Step 258: 48316 + 188 = 48504
Step 259: 48504 + 188 = 48692
Step 260: 48692 + 188 = 48880
Step 261: 48880 + 188 = 49068
Step 262: 49068 + 188 = 49256
Step 263: 49256 + 188 = 49444
Step 264: 49444 + 188 = 49632
Step 265: 49632 + 188 = 49820
Step 266: 49820 + 188 = 50008
Step 267: 50008 + 188 = 50196
Step 268: 50196 + 188 = 50384
Step 269: 50384 + 188 = 50572
Step 270: 50572 + 188 = 50760
Step 271: 50760 + 188 = 50948
Step 272: 50948 + 188 = 51136
Step 273: 51136 + 188 = 51324
Step 274: 51324 + 188 = 51512
Step 275: 51512 + 188 = 51700
Step 276: 51700 + 188 = 51888
Step 277: 51888 + 188 = 52076
Step 278: 52076 + 188 = 52264
Step 279: 52264 + 188 = 52452
Step 280: 52452 + 188 = 52640
Step 281: 52640 + 188 = 52828
Step 282: 52828 + 188 = 53016
Step 283: 53016 + 188 = 53204
Step 284: 53204 + 188 = 53392
Step 285: 53392 + 188 = 53580
Step 286: 53580 + 188 = 53768
Step 287: 53768 + 188 = 53956
Step 288: 53956 + 188 = 54144
Step 289: 54144 + 188 = 54332
Step 290: 54332 + 188 = 54520
Step 291: 54520 + 188 = 54708
Step 292: 54708 + 188 = 54896
Step 293: 54896 + 188 = 55084
Step 294: 55084 + 188 = 55272
Step 295: 55272 + 188 = 55460
Step 296: 55460 + 188 = 55648
Step 297: 55648 + 188 = 55836
Step 298: 55836 + 188 = 56024
Step 299: 56024 + 188 = 56212
Step 300: 56212 + 188 = 56400
Step 301: 56400 + 188 = 56588
Step 302: 56588 + 188 = 56776
Step 303: 56776 + 188 = 56964
Step 304: 56964 + 188 = 57152
Step 305: 57152 + 188 = 57340
Step 306: 57340 + 188 = 57528
Step 307: 57528 + 188 = 57716
Step 308: 57716 + 188 = 57904
Step 309: 57904 + 188 = 58092
Step 310: 58092 + 188 = 58280
Step 311: 58280 + 188 = 58468
Step 312: 58468 + 188 = 58656
Step 313: 58656 + 188 = 58844
Step 314: 58844 + 188 = 59032
Step 315: 59032 + 188 = 59220
Step 316: 59220 + 188 = 59408
Step 317: 59408 + 188 = 59596
Step 318: 59596 + 188 = 59784
Step 319: 59784 + 188 = 59972
Step 320: 59972 + 188 = 60160
Step 321: 60160 + 188 = 60348
Step 322: 60348 + 188 = 60536
Step 323: 60536 + 188 = 60724
Step 324: 60724 + 188 = 60912
Step 325: 60912 + 188 = 61100
Step 326: 61100 + 188 = 61288
Step 327: 61288 + 188 = 61476
Step 328: 61476 + 188 = 61664
Step 329: 61664 + 188 = 61852
Step 330: 61852 + 188 = 62040
Step 331: 62040 + 188 = 62228
Step 332: 62228 + 188 = 62416
Step 333: 62416 + 188 = 62604
Step 334: 62604 + 188 = 62792
Step 335: 62792 + 188 = 62980
Step 336: 62980 + 188 = 63168
Step 337: 63168 + 188 = 63356
Step 338: 63356 + 188 = 63544
Step 339: 63544 + 188 = 63732
Step 340: 63732 + 188 = 63920
Step 341: 63920 + 188 = 64108
Step 342: 64108 + 188 = 64296
Step 343: 64296 + 188 = 64484
Step 344: 64484 + 188 = 64672
Step 345: 64672 + 188 = 64860
Step 346: 64860 + 188 = 65048
Step 347: 65048 + 188 = 65236
Step 348: 65236 + 188 = 65424
Step 349: 65424 + 188 = 65612
Step 350: 65612 + 188 = 65800
Step 351: 65800 + 188 = 65988
Step 352: 65988 + 188 = 66176
Step 353: 66176 + 188 = 66364
Step 354: 66364 + 188 = 66552
Step 355: 66552 + 188 = 66740
Step 356: 66740 + 188 = 66928
Step 357: 66928 + 188 = 67116
Step 358: 67116 + 188 = 67304
Step 359: 67304 + 188 = 67492
Step 360: 67492 + 188 = 67680
Step 361: 67680 + 188 = 67868
Step 362: 67868 + 188 = 68056
Step 363: 68056 + 188 = 68244
Step 364: 68244 + 188 = 68432
Step 365: 68432 + 188 = 68620
Step 366: 68620 + 188 = 68808
Step 367: 68808 + 188 = 68996
Step 368: 68996 + 188 = 69184
Step 369: 69184 + 188 = 69372
Step 370: 69372 + 188 = 69560
Step 371: 69560 + 188 = 69748
Step 372: 69748 + 188 = 69936
Step 373: 69936 + 188 = 70124
Step 374: 70124 + 188 = 70312
Step 375: 70312 + 188 = 70500
Step 376: 70500 + 188 = 70688
Step 377: 70688 + 188 = 70876
Step 378: 70876 + 188 = 71064
Step 379: 71064 + 188 = 71252
Step 380: 71252 + 188 = 71440
Step 381: 71440 + 188 = 71628
Step 382: 71628 + 188 = 71816
Step 383: 71816 + 188 = 72004
Step 384: 72004 + 188 = 72192
Step 385: 72192 + 188 = 72380
Step 386: 72380 + 188 = 72568
Step 387: 72568 + 188 = 72756
Step 388: 72756 + 188 = 72944
Step 389: 72944 + 188 = 73132
Step 390: 73132 + 188 = 73320
Step 391: 73320 + 188 = 73508
Step 392: 73508 + 188 = 73696
Step 393: 73696 + 188 = 73884
Step 394: 73884 + 188 = 74072
Step 395: 74072 + 188 = 74260
Step 396: 74260 + 188 = 74448
Step 397: 74448 + 188 = 74636
Step 398: 74636 + 188 = 74824
Step 399: 74824 + 188 = 75012
Step 400: 75012 + 188 = 75200
Step 401: 75200 + 188 = 75388
Step 402: 75388 + 188 = 75576
Step 403: 75576 + 188 = 75764
Step 404: 75764 + 188 = 75952
Step 405: 75952 + 188 = 76140
Step 406: 76140 + 188 = 76328
Step 407: 76328 + 188 = 76516
Step 408: 76516 + 188 = 76704
Step 409: 76704 + 188 = 76892
Step 410: 76892 + 188 = 77080
Step 411: 77080 + 188 = 77268
Step 412: 77268 + 188 = 77456
Step 413: 77456 + 188 = 77644
Step 414: 77644 + 188 = 77832
Step 415: 77832 + 188 = 78020
Step 416: 78020 + 188 = 78208
Step 417: 78208 + 188 = 78396
Step 418: 78396 + 188 = 78584
Step 419: 78584 + 188 = 78772
Step 420: 78772 + 188 = 78960
Step 421: 78960 + 188 = 79148

So, 188*421 = 79148